Incomplete leaves refer to the leavespetioleandStipuleIn the three part structure, one part or two parts of leaves are missing.There are fewer leaves without leaves. For example, Acacia in Taiwan, the leaves are completely degenerated, and the petiole is flat, which can be used for photosynthesis. It is called petiole.A complete leaf should have three parts: stipule, petiole and leaf bodycomplete leaf, such as the leaves of pear, peach, pea, rose and other plants.
stayblade、petioleandStipuleIn the three part structure, the leaves lacking one part or two parts are called incomplete leaves.
The leaf is the main part of the leaf, usually a green flat body, symmetrical on both sides, with back and abdomen.The petiole is the connection part between the leaf and the stem, which is located at the base of the leaf. The upper end is connected with the leaf, and the lower end is born on the stem.The petiole is usually thin cylindrical, flat or has a groove.
complete leaf
The shape and size of stipules vary greatly with different plant species, and are generally small.Stipules are often an important basis for distinguishing various plants, more important than petioles, because in different individuals of the same plant, the existence of stipules is extremely consistent, and their texture and shape will not change much[1]。
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astea、Chinese cabbage, cloves, etc.withoutStipule, or without stipules and petioles, called incomplete leaves.The leaves of Chinese cabbage, tea, cloves and other plants are called incomplete leaves.
There are fewer leaves without leaves. For example, Acacia in Taiwan, the leaves are completely degenerated, and the petiole is flat, which can be used for photosynthesis. It is called petiole.
Each plant has different leaves.The leaf is divided into three parts: leaf blade, petiole and leaf receptacle.Leaf is the place where plants carry out photosynthesis.The petiole connects the leaf with the stem, its upper end is connected with the leaf, and its lower end is connected with the stem.The petiole is a small green sheet at the base and both sides of the petiole. The petiole usually grows before the leaf and plays a role in protecting young leaves and buds in the early stage.However, not all plants are composed of leaves, petioles and petioles.The leaves composed of these three parts are called "complete leaves", while the leaves lacking any one of these structures are called "incomplete leaves".The most common ones without stipules are clove, tea, cabbage, etc.Plants like crape myrtle are incomplete leaves without petioles[2]。
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Lettuce
Leaves are attached to stems, usually green and flat, contain a lot of chloroplasts, and have phototropism. They are important organs for plants to conduct photosynthesis and produce organic nutrients.The leaves also have the function of gas exchange and transpiration. Some leaves also have the function of storing nutrients, such as the fleshy scale leaves of fritillaria and lily, and the leaves of a few plants still have the function of reproduction, such as ground-based rooting and begonia[3]。
